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ZINC SULPHATE

Zinc (as Zn) content by weight: minimum 21% Sulphur (as S) content by weight: minimum 10% Lead (as Pb) content by weight: maximum 003% Copper (as Cu) content by weight: maximum 1% Magnesium (as Mg) content by weight: maximum 5% Cadmium (as Cd) content by weight: maximum 0.0025% Arsenic (as As) content by weight: maximum 0.01% Matter insoluble in water by weight: maximum 1% pH: not less than 4 Form: free flowing powder